Load-brake equipment



Shep-ts-Sheet 1 Ow j..

vNvENTo, JEAN GUILLEMlN-TARAYRE oct. 4,1927. y v J; GUI,LLEMIN-TFQAYRA LOAD BRAKE EQUIPMENT Filed March 15. 1926y Patented Oct. 4, 1927.`

JEAN GULLEMam-TARAYJRE, or VILLEMOMBLE, iFRANCE, ASSIGNB 'VToyTHEyW-E'sic- Y 'THON lo@ "APENNSYLVANIA 3- 1Min-@MIKE fEQcULBME-Nm.

i `This. ,inveIit-ion [relates Itov fluid pigessupe brakes', V@ml more' ,p articularzly ,.t-o 1an empty ,.afndloadbr-,akeapparatus.

5 two ,brakecylnders in an 'empty aJ11dy lloafl fequi,pntient ,may `comprisel ai ltriple Yalveu de an auxiliary' Vxesferyoir f3, a A supplementary vvlve:demic@ -1 may QOmprSQz-a Casing-having ,a Piston chamber :i7 connected :to the ibm-ke at '17.to out lllcommunicaption "from chamber 'befmountdin 'bushing 19 ma islaaiitje lan one position to ,festahli'sli commuiiigagbiqn .from passagfl 't0 :pSSagee leading? tie 'tion tov cu't foil' Said cgmmuuicationl "The takeuppbmkec,linden 5 may lloe ned in 'lhelriplvalw ffm" The load Y The locking mechanism' mafypoingprise .'17, .thence through feedvgroove 36 to valve hamberll and through pipe 3'( to'auxiliary VVr eservoirp3, charging 'the sameyThe supplementary reservoir .4 will not be charged,

t voris cutfoH byiplug valve 20. Y

plication of thebrakes, the pressure in brake j vZand consequently in piston chamber loglof triplev valve device 1 is reduced in the f usual way, permitting the n'higher pressure valve chamber 111 acting on theopposite Iside of piston 8 to shiftsaidv piston, gradu- Tatingfshde valve 10 andYV main slide .valve 9 I5"tosjervice .'position, .With' saidV slidevalves finffthisposition,i'uid under "pressure from valve'chalnber 11 and auxiliary reservoir 3 'passa .39 and V*chamber 15,1`thence past uni l iulxiliaryfreservoir canthenilow to the brakel f "feylinderfoly through a restricted port 4 2.

When it, 1s desiredlto release the' brakes` thejibrake pipe pressure is increasedfin the Y y a' ".usualway, causingfpi'ston 8, slide c valve r9, :fand graduatingslldevalvelfO to be `shifted Ffh/@release position. Fluid,` from brake fio '40,V po1't43 in bushing 19, cavity 44 in ,v icalvit47f 1n slidevalve 19j," and atmosfusielnijhder, the rodi V21 'is-.shifted so that the gcp-1lgt'ii-ai1, as shown in Fig. Beef .the drawings,

j lug valve4 '20 .willbez rotated to the posi! lation `1`n which port'22 establishes communicasupplementaryreservoirr to 'be charged at I the same'jtim'e the auxiliary 'reservoir iis* chal." d from the brake pipe.V '55 enga service-'application fis `eil'eeted with theparts set for load brak- 1'ng,"uid underfpressurefrom valve chamber .3 v u i-11, auxiliaryreservoir, and supplementary .yreserviorg'flows' to the take-up brake cylin- 1 va Aplication'onan em ty car, as hereinbefore seribebt when. v

' f .xn'ovement of "piston 13, the unseating of Y g valvel permitsitheowof'lluid from cham- "sof-.tion fram the @miliari ber through passage 51,'fport52 in bushA lsnoefeommunication fromv .auxiliary reserf,

fWlaen itis desired vto effect a service ap-' VHows through port 38 in slidel Vvalvef9, to

valve 14 to` isvtonchamber 12jandto the empty eyliiideri 'then flowsthrough pipe and pasivalve 18,'v port "45 `in bushing 1 9, passage i`l valve 18 will be rotated Ito its .j load reservoirg to supplevLetters Patent, is :-v ereby permitting said of the brakes i evalve V1 4 is seated byV ing 19, cavity 44 in plug valve 18, port 54 in bushing 19V and passage and pipe 55 to` yload'brake cylinder 6.V f v The pressure ofiiuid so supplied to brake Y cylinder 6 causes .piston 26to move out and theinitialmovement thereof disengages pin -49Afrom cylinder 6, so that springv stem 50 j i.

moves pawl 33 into engagement with one of 'notches 30, whereby the pressure of fluid supplied, to `the* piston 26 is transmitted through the piston 'rod 29an`d the'lever 31 to Ythe brake rigging; 2.5, the slackk of the` sleeve 27 to an extent corresponding with the brake cylinder piston 25.

fPwInrel'easing,thebrakes after a load brake service applicatiomiiuid from takeup brake brake rigginghaving'been taken up and the i i piston rod 29 having been pulled` out of the .8D .movement of vthe brake rigging 25 'and the`k j jleverl, bythe operation of theempty car Y cylinderf flows Vto atmosphere through pipe passage 46, cavity-47l in slidefvalve 9 and atmospheric exhaust port 48'. Fluid from and passage 40, port 43 in bushing 19, cavity load Abrake ,cylinder 6 flows throughY pipe and passage 55, port 54 in bushing 19, cavity '44, and port 57 njplug valve 18, raising ball check 58, and continuingthroughport 59, `cavity 56, port k45, passage'46, cavity 47I and atmospheric exhaust port 48. The relative z treasV`V of the light car brake application by flow through thetime of release from both brake cylinders by way 0f port 45 will be the same as `the action ofma two stage triple valve device Vf orfefl'ecting the charging of the' loadbrake ffcylinder Vwhen the apparatus isbeing operlated to provide for a loaded car.

ports' 42am 521' are such Vthat-thetime required to effect a time of releaselfrom lthe empty brake cylinderbywayofport43. f

1 It'will now be seen that I have utilized the Whenit vs desired to `cut.` in the load brake 'Having now described invention, what l I claim as, newand desirel tofsecure vby crease inthe pressure of fluid supplied'to onebrake cylinder for cutting oil'A a communication through which fluid` is supplied to said. brakevcylinder and means operated upon movement of said valve Vdevice to cut y l .y lofiy said communication for opening a comderlfln the [same manner as 1n a service munication through which luidunder pressure is supplied tothe other brake cylinder.

2. Ina load brake apparatus, the combination with two brake cylinders, ofa valve for controlling a communication through which fluid under pressure is supplied tov one brake cylinder, means for operating said valve to close said communication upon a predetermlned increase 1n pressure 1n said brake cylinder, and aV valve operated upon the movement of the first valve toclose said communication for opening a communication through Which fluid under pressure is supplied to the other brake cylinder.

3. In a load brake apparatus, the combination with an empty brake cylinder and 'a load brake cylinder, of a valve for supplying fluid under pressure to the empty brake Cylinder, means"V operated upon a predetermined increase in pressure `of fluid supplied to the empty brake cylinder for effecting the closure of said valve, and a valvejoperv ated by the movement ofthefirst valve for opening a y communication through which Huid under pressure is supplied to the load brake cylinder.

In testimony whereof I have hereunto set 

